помогите пожалуйста с номером 6 срочно нужно !!(посмотрите на другие номера возможно какой нибудь номер подойдёт к тексту)

They were very hungry! In the evening detectives played chess and had some tea. Then they had an urgent phone call from Mrs Smith. They were surprised because she wanted to see them at her sister's house an they knocked on the door.Mrs Smith opened the door and there was a delicious meal on the table for them! What a surprise!